Numerical Simulation and Analysis of Spectral Responses of InP N +/P Solar Cell

用数值模拟方法对InPn＋/P太阳电池在AM1.0下的光谱响应和光电流进行了计算和分析，探讨引起InP太阳电池光谱特性曲线变化的原因，从而获得n＋区和P区的最佳掺杂浓度、厚度、表面复合速度等参数，为设计制造InP太阳电池提供参考数据.The computation and analysis For the spectral response and the photocurrents of InP N +/P solar cells are carried out under AM1.0 by using numerical simulation.The reasons causing a change in spectral response of the InP solar cells are discussed.Then the parameters,suchas optimal doping concentration, thickness, surFace recobination speed etc,are obtained,respectively,For N + zone and P zone.The reFerrable data are provided For the designing and making InP solar cells.国家自然科学基金;福建省自然科学基

High quality Multi Quantum Well Structure by MOVPE

【中文摘要】 利用金属有机气相沉积技术生长ＩｎＧａＡｓＰ／ＩｎＰ多量子阱结构，通过改变生长程序，得到了优化的陡峭量子阱界面．并利用光致发光（ＰＬ）和Ｘ射线双晶衍射对其界面质量分析，Ｘ射线双晶衍射表明界面起伏为一个原子层厚度，在１０Ｋ温度下ＰＬ谱半峰高宽（ＦＷＨＭ）为７ｍｅＶ 【英文摘要】 Multi quantum well interface quality is one of key factors that affect device performance. Metalorganic vapor phase epitaxial (MOVPE) grown InGaAsP/InP multi quantum well structure are studied. Abruptness optimization of interfaces is carried out by means of a different gas switching sequences. Analysis of x-ray and photoluminescence (PL) are used to provide detailed information about the interfaces. Measured and simulated rocking curves of Xray diffraction show monolayer fluctuations at the interfaces...福建省青年重点基

黑河流域生态—水文过程集成研究进展

国家自然科学基金重大研究计划"黑河流域生态—水文过程集成研究"(简称黑河计划)贯穿地球系统科学的思维,针对我国内陆河地区严峻的水—生态问题,探索流域尺度提高水效益的理论和方法。计划执行4年来,建立了遥感—监测—实验一体的流域生态水文观测系统及其相应的数据平台;初步揭示了流域冰川、森林、绿洲等重要生态水文过程耦合机理,认识了流域一级生态水文单元的水系统特征,奠定了流域水循环、水平衡的科学基础;计算了黑河下游生态需水量,为黑河流域水资源优化管理厘定了重要的约束条件。今后几年将在高精度气、水、生、经时空数据的支持下,耦合与集成流域综合模型,保证我国流域科学能在世界前沿占一席之地